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Updated: Sep 11, 2025

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
Published on: September 8, 2013
Annulative Coupling of β-Ketosulfoxonium Ylides, β-Ketothioamides, and Aldehydes: Access to Highly Functionalized
Rahul Kumar Saini1, Satyendra Kumar Pandey1
1Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
Abstract:
A one-pot strategy has been developed for the efficient synthesis of highly functionalized dihydrothiophenes using β-ketosulfoxonium ylides, β-ketothioamides, and aldehydes. This cascade process involves C(sp3)-H insertion, aldol condensation, and intramolecular 1,4-conjugate addition, forming C-S and C-C bonds efficiently. The method offers good to high yields, a broad substrate scope, structural diversity, and scalability. Additionally, its synthetic utility is demonstrated through further transformation into a thiophene derivative, highlighting its applicability in the construction of complex molecules.
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